210211121210011 has 4 divisors (see below), whose sum is σ = 210211155109800. Its totient is φ = 210211087310224.

The previous prime is 210211121210003. The next prime is 210211121210071. The reversal of 210211121210011 is 110012121112012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210211121210011 - 2³ = 210211121210003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210211121210071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4695001 + ... + 21034858.

It is an arithmetic number, because the mean of its divisors is an integer number (52552788777450).

Almost surely, 2^{210211121210011} is an apocalyptic number.

210211121210011 is a deficient number, since it is larger than the sum of its proper divisors (33899789).

210211121210011 is an equidigital number, since it uses as much as digits as its factorization.

210211121210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33899788.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 210211121210011 its reverse (110012121112012), we get a palindrome (320223242322023).

The spelling of 210211121210011 in words is "two hundred ten trillion, two hundred eleven billion, one hundred twenty-one million, two hundred ten thousand, eleven".